• Journal of critical care · Aug 2014

    Antiphospholipid antibodies in critically ill patients with cancer: A prospective cohort study.

    • Juliana Vassalo, Nelson Spector, Ernesto de Meis, Lígia S C F Rabello, Maíra M Rosolem, Pedro E A A do Brasil, Jorge I F Salluh, and Márcio Soares.
    • Postgraduate Program, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
    • J Crit Care. 2014 Aug 1; 29 (4): 533-8.

    PurposeThe purpose of this study is to evaluate the prevalence and the prognostic impact of antiphospholipid antibodies (aPL) in critically ill cancer patients.MethodsThis is a prospective cohort study in adult patients admitted to the intensive care unit for more than 48 hours at a cancer center. Clinical and laboratory data including coagulation parameters were obtained. Cox proportional hazard models were used to identify predictors of 6-month mortality.ResultsNinety-five (solid tumor, 79%; hematologic malignancies, 21%) patients were included, and aPL were identified in 74% of them. Median Simplified Acute Physiology Score 3 and Sequential Organ Failure Assessment scores were 51 (37-65) and 5 (2-8) points, respectively. The most frequent aPL were lupus anticoagulant (61%) and anti-β2 glicoprotein I (32%). Vascular complications occurred in 18% of patients and were comparable between aPL+ and aPL- patients. Sepsis and need for renal replacement therapy were more frequent in aPL+ patients. Hospital and 6-month mortality rates were 44% and 56%, respectively. Higher Sequential Organ Failure Assessment scores (each point) (hazard ratios [HR]=2.83 [95% confidence interval, 1.59-5.00]), medical admissions (HR=2.66 [1.34-5.27]), and d-dimer more than 500 ng/dL (HR=1.89 (1.04-3.44]) were independently associated with mortality. After adjusting for these covariates, aPL status was not associated with outcomes (HR=1.22 [0.60-2.47]).ConclusionsLupus anticoagulants were frequent in critically ill cancer patients. However, they were not associated with medium-term survival in these patients.Copyright © 2014 Elsevier Inc. All rights reserved.

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